Sulfur Dioxide (SO₂) Primary Standards -
Documents from Review Completed in 1996

Note: EPA no longer updates this information, but it may be useful for historical purposes. See the Sulfur Dioxide Standards Home Page for documents from the current review of the Sulfur Dioxide NAAQS.

Staff Papers

Review of the National Ambient Air Quality Standards for Sulfur Oxides: Assessment of Scientific and Technical Information: Supplement to the 1986 OAQPS Staff Paper (PDF) (99pp, 3.5 MB) September 1994
Review of the National Ambient Air Quality Standards for Sulfur Oxides: Updated Assessment of Scientific and Technical Information: Addendum to the 1982 OAQPS Staff Paper (PDF) (98pp, 4.8 MB) December 1986
Review of the National Ambient Air Quality Standards for Sulfur Oxides: Assessment of Scientific and Technical Information: OAQPS Staff Paper (PDF) (229pp, 10.6 MB) September 1982

Federal Register Notices

National Ambient Air Quality Standards for Sulfur Oxides (Sulfur Dioxide); Availability of Information (PDF) (4pp, 132k) January 9, 2001
National Ambient Air Quality Standards for Sulfur Oxides (Sulfur Dioxide); Intervention Level Program (PDF) (3pp, 30k) May 5, 1998
National Ambient Air Quality Standards for Sulfur Oxides (Sulfur Dioxide)-Final Decision (PDF) (15pp, 133k) May 22, 1996
Primary SO2 NAAQS - Final Decision Notice (zip) (43k) May 15, 1996
Primary SO2 NAAQS Reproposal (PDF) (154pp, 206k) November 8, 1994

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Sulfur Dioxide (SO2) Primary Standards - Documents from Review Completed in 1996

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Sulfur Dioxide (SO₂) Primary Standards -
Documents from Review Completed in 1996